Down can be divided into white goose down, gray goose down, white duck down and grey duck down. In the same cashmere content, goose cashmere is more expensive than duck cashmere, and white cashmere is more expensive than gray cashmere. Under the same conditions, the overall quality of white goose down is better than that of white duck down, but there is no difference in performance indexes (warmth retention, fluffy, etc.). ) Between White Duck Down and grey duck down. The same is true of white goose down and gray goose down.
Goose down is more expensive than duck down, and white down is more expensive than grey down. Because things are rare.
Goose down is much more expensive than duck down, not because the quality is much more expensive than duck down, but more importantly, because there are more ducks, more duck down, less geese and less goose down.
The yield of white goose down is less than that of grey goose down, and that of white duck down is less than that of grey duck down. Take duck down as an example. In the south, most of them are lake duck down, almost all of them are black and gray hair. The number of white ducks is less than that of gray ducks, and the yield of white duck down is naturally less, so the price is naturally expensive.
In terms of use, white duck down is used as clothing filler for light-colored fabrics, and gray duck down will be selected as down jacket for dark-colored fabrics. There is no saying that white duck down is warmer than grey duck down.
Just because some down products have lighter fabrics and fewer layers of lining materials, white duck down is generally used to avoid revealing the color of the filler.
Especially for down jackets with white fabrics, white duck down is generally used to avoid looking gray, but if the interlining is thick or multi-layered, this problem is basically not considered.
Therefore, white duck down is expensive because of its low yield and wider use, not because of its better properties such as warmth and fluffy. Generally speaking, the quality of down is not color.